نتایج جستجو برای: radioactive particle tracking

تعداد نتایج: 302870  

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2001
C Tsopelas

UNLABELLED Colloidal particle size is an important characteristic to consider when choosing a radiopharmaceutical for mapping sentinel nodes in lymphoscintigraphy. METHODS Photon correlation spectroscopy (PCS) and transmission electron microscopy (TEM) were used to determine the particle size of antimony trisulfide and rhenium sulfide colloids, and membrane filtration (MF) was used to determi...

Journal: :Experiments in Fluids 2021

In this article, we present a novel Lagrangian particle tracking method derived from the perspective of tracking-by-detection paradigm that has been adopted by many vision tasks. Under paradigm, problem consists first learning function (the tracker) maps target particle’s image projection backwardly to its possible position inferred precedent information. The actual is then detected applying le...

Journal: :The Journal of General Physiology 1951
A. D. Hershey M. D. Kamen J. W. Kennedy H. Gest

The bacteriophage T4 containing assimilated radioactive phosphorus is inactivated at a rate proportional to the specific radioactivity of the constituent phosphorus. The beta radiation from the phosphorus makes a negligible contribution to this effect. The inactivation is therefore a direct consequence of the nuclear reaction, which kills the phage with an efficiency of about 1/12. Several phag...

The particle filter (PF) is a novel technique that has sufficiently good estimation results for the nonlinear/non-Gaussian systems. However, PF is inconsistent that caused mainly by loss of particle diversity in resampling step and unknown a priori knowledge of the noise statistics. This paper introduces a new modified particle filter called adaptive unscented particle filter (AUPF) to overcome th...

2008
Jesús Martínez Jean-Christophe Nebel Dimitrios Makris Carlos Orrite-Uruñuela

In this paper, a novel framework for visual tracking of human body parts is introduced. The presented approach demonstrates the feasibility of recovering human poses with data from a single uncalibrated camera using a limb tracking system based on a 2D articulated model. It is constrained only by biomechanical knowledge about human bipedal motion, instead on relying on constraints linked to a s...

Journal: :Journal of virology 1977
L I Lutwick W S Robinson

Radioactive DNA was prepared in extensive (4 h) Dane particle DNA polymerase reactions. In different experiments the amount of new DNA, determined by the amount of nucleotide incorporation into an acid-insoluble form, was between 29 and 45% of the total circular DNA isolated from Dane particle preparations after the reaction. DNA reassociation kinetics were used to determine the complexity of t...

Journal: :Computers & Geosciences 2011
Wen-Cheng Liu Wei-Bo Chen Ming-Hsi Hsu

A three-dimensional hydrodynamic model that includes a Lagrangian particle-tracking simulation was applied to the Danshuei River estuarine system in northern Taiwan. The model’s accuracy was validated with data from1999; the results from themodel agreedwellwith empirical observations ofwater surface elevation, tidal currents, and salinity. The validatedmodelwas then used to investigate the resi...

2003
Jean-Marc Odobez Sileye O. Ba Daniel Gatica-Perez

Particle filters is now established as one of the most popular method for visual tracking. Within this framework, it is generally assumed that the data are temporally independent given the sequence of object states. In this paper, we argue that in general the data are correlated, and that modeling such dependency should improve tracking robustness. To take data correlation into account, we prop...

2013
Takahiro Ito Daisuke Anzai Jianqing Wang

Tracking a capsule endoscope location is one of promising application offered by implant body area networks (BANs). In this paper, we pay attention to a particle filter algorithm with received signal strength indicator (RSSI)-based localization in order to solve the capsule endoscope location tracking problem, which assumes a nonlinear transition model on the capsule endoscope location. However...

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